C++ ArgStringList::end方法代码示例

bool Compilation::CleanupFileList(const ArgStringList &Files,
                                  bool IssueErrors) const {
  bool Success = true;

  for (ArgStringList::const_iterator
         it = Files.begin(), ie = Files.end(); it != ie; ++it) {

    llvm::sys::Path P(*it);
    std::string Error;

    // Don't try to remove files which we don't have write access to (but may be
    // able to remove). Underlying tools may have intentionally not overwritten
    // them.
    if (!P.canWrite())
      continue;

    if (P.eraseFromDisk(false, &Error)) {
      // Failure is only failure if the file exists and is "regular". There is
      // a race condition here due to the limited interface of
      // llvm::sys::Path, we want to know if the removal gave ENOENT.

      // FIXME: Grumble, P.exists() is broken. PR3837.
      struct stat buf;
      if (::stat(P.c_str(), &buf) == 0 ? (buf.st_mode & S_IFMT) == S_IFREG :
                                         (errno != ENOENT)) {
        if (IssueErrors)
          getDriver().Diag(lfort::diag::err_drv_unable_to_remove_file)
            << Error;
        Success = false;
      }
    }
  }

  return Success;
}

std::string Arg::getAsString(const ArgList &Args) const {
    llvm::SmallString<256> Res;
    llvm::raw_svector_ostream OS(Res);

    ArgStringList ASL;
    render(Args, ASL);
    for (ArgStringList::iterator
            it = ASL.begin(), ie = ASL.end(); it != ie; ++it) {
        if (it != ASL.begin())
            OS << ' ';
        OS << *it;
    }

    return OS.str();
}

static bool ParseIRGenArgs(IRGenOptions &Opts, ArgList &Args,
                           DiagnosticEngine &Diags,
                           const FrontendOptions &FrontendOpts,
                           StringRef SDKPath,
                           StringRef ResourceDir) {
  using namespace options;

  if (const Arg *A = Args.getLastArg(OPT_g_Group)) {
    if (A->getOption().matches(OPT_g))
      Opts.DebugInfoKind = IRGenDebugInfoKind::Normal;
    else if (A->getOption().matches(options::OPT_gline_tables_only))
      Opts.DebugInfoKind = IRGenDebugInfoKind::LineTables;
    else
      assert(A->getOption().matches(options::OPT_gnone) &&
             "unknown -g<kind> option");

    if (Opts.DebugInfoKind == IRGenDebugInfoKind::Normal) {
      ArgStringList RenderedArgs;
      for (auto A : Args)
        A->render(Args, RenderedArgs);
      CompilerInvocation::buildDWARFDebugFlags(Opts.DWARFDebugFlags,
                                               RenderedArgs, SDKPath,
                                               ResourceDir);
      // TODO: Should we support -fdebug-compilation-dir?
      llvm::SmallString<256> cwd;
      llvm::sys::fs::current_path(cwd);
      Opts.DebugCompilationDir = cwd.str();
    }
  }

  for (const Arg *A : make_range(Args.filtered_begin(OPT_l, OPT_framework),
                                 Args.filtered_end())) {
    LibraryKind Kind;
    if (A->getOption().matches(OPT_l)) {
      Kind = LibraryKind::Library;
    } else if (A->getOption().matches(OPT_framework)) {
      Kind = LibraryKind::Framework;
    } else {
      llvm_unreachable("Unknown LinkLibrary option kind");
    }

    Opts.LinkLibraries.push_back(LinkLibrary(A->getValue(), Kind));
  }

  if (auto valueNames = Args.getLastArg(OPT_disable_llvm_value_names,
                                        OPT_enable_llvm_value_names)) {
    Opts.HasValueNamesSetting = true;
    Opts.ValueNames =
      valueNames->getOption().matches(OPT_enable_llvm_value_names);
  }

  Opts.DisableLLVMOptzns |= Args.hasArg(OPT_disable_llvm_optzns);
  Opts.DisableLLVMARCOpts |= Args.hasArg(OPT_disable_llvm_arc_opts);
  Opts.DisableLLVMSLPVectorizer |= Args.hasArg(OPT_disable_llvm_slp_vectorizer);
  if (Args.hasArg(OPT_disable_llvm_verify))
    Opts.Verify = false;

  Opts.EmitStackPromotionChecks |= Args.hasArg(OPT_stack_promotion_checks);
  if (const Arg *A = Args.getLastArg(OPT_stack_promotion_limit)) {
    unsigned limit;
    if (StringRef(A->getValue()).getAsInteger(10, limit)) {
      Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
                     A->getAsString(Args), A->getValue());
      return true;
    }
    Opts.StackPromotionSizeLimit = limit;
  }

  if (Args.hasArg(OPT_autolink_force_load))
    Opts.ForceLoadSymbolName = Args.getLastArgValue(OPT_module_link_name);

  // TODO: investigate whether these should be removed, in favor of definitions
  // in other classes.
  if (FrontendOpts.PrimaryInput && FrontendOpts.PrimaryInput->isFilename()) {
    unsigned Index = FrontendOpts.PrimaryInput->Index;
    Opts.MainInputFilename = FrontendOpts.InputFilenames[Index];
  } else if (FrontendOpts.InputFilenames.size() == 1) {
    Opts.MainInputFilename = FrontendOpts.InputFilenames.front();
  }
  Opts.OutputFilenames = FrontendOpts.OutputFilenames;
  Opts.ModuleName = FrontendOpts.ModuleName;

  if (Args.hasArg(OPT_use_jit))
    Opts.UseJIT = true;
  
  for (const Arg *A : make_range(Args.filtered_begin(OPT_verify_type_layout),
                                 Args.filtered_end())) {
    Opts.VerifyTypeLayoutNames.push_back(A->getValue());
  }

  for (const Arg *A : make_range(Args.filtered_begin(
                                   OPT_disable_autolink_framework),
                                 Args.filtered_end())) {
    Opts.DisableAutolinkFrameworks.push_back(A->getValue());
  }

  Opts.GenerateProfile |= Args.hasArg(OPT_profile_generate);
  Opts.PrintInlineTree |= Args.hasArg(OPT_print_llvm_inline_tree);

  if (Args.hasArg(OPT_embed_bitcode))
//.........这里部分代码省略.........

static bool ParseIRGenArgs(IRGenOptions &Opts, ArgList &Args,
                           DiagnosticEngine &Diags,
                           const FrontendOptions &FrontendOpts,
                           const SILOptions &SILOpts,
                           StringRef SDKPath,
                           StringRef ResourceDir,
                           const llvm::Triple &Triple) {
  using namespace options;

  if (!SILOpts.SILOutputFileNameForDebugging.empty()) {
      Opts.DebugInfoKind = IRGenDebugInfoKind::LineTables;
  } else if (const Arg *A = Args.getLastArg(OPT_g_Group)) {
    if (A->getOption().matches(OPT_g))
      Opts.DebugInfoKind = IRGenDebugInfoKind::Normal;
    else if (A->getOption().matches(options::OPT_gline_tables_only))
      Opts.DebugInfoKind = IRGenDebugInfoKind::LineTables;
    else if (A->getOption().matches(options::OPT_gdwarf_types))
      Opts.DebugInfoKind = IRGenDebugInfoKind::DwarfTypes;
    else
      assert(A->getOption().matches(options::OPT_gnone) &&
             "unknown -g<kind> option");

    if (Opts.DebugInfoKind > IRGenDebugInfoKind::LineTables) {
      ArgStringList RenderedArgs;
      for (auto A : Args)
        A->render(Args, RenderedArgs);
      CompilerInvocation::buildDWARFDebugFlags(Opts.DWARFDebugFlags,
                                               RenderedArgs, SDKPath,
                                               ResourceDir);
      // TODO: Should we support -fdebug-compilation-dir?
      llvm::SmallString<256> cwd;
      llvm::sys::fs::current_path(cwd);
      Opts.DebugCompilationDir = cwd.str();
    }
  }

  for (const Arg *A : Args.filtered(OPT_Xcc)) {
    StringRef Opt = A->getValue();
    if (Opt.startswith("-D") || Opt.startswith("-U"))
      Opts.ClangDefines.push_back(Opt);
  }

  for (const Arg *A : Args.filtered(OPT_l, OPT_framework)) {
    LibraryKind Kind;
    if (A->getOption().matches(OPT_l)) {
      Kind = LibraryKind::Library;
    } else if (A->getOption().matches(OPT_framework)) {
      Kind = LibraryKind::Framework;
    } else {
      llvm_unreachable("Unknown LinkLibrary option kind");
    }

    Opts.LinkLibraries.push_back(LinkLibrary(A->getValue(), Kind));
  }

  if (auto valueNames = Args.getLastArg(OPT_disable_llvm_value_names,
                                        OPT_enable_llvm_value_names)) {
    Opts.HasValueNamesSetting = true;
    Opts.ValueNames =
      valueNames->getOption().matches(OPT_enable_llvm_value_names);
  }

  Opts.DisableLLVMOptzns |= Args.hasArg(OPT_disable_llvm_optzns);
  Opts.DisableLLVMARCOpts |= Args.hasArg(OPT_disable_llvm_arc_opts);
  Opts.DisableLLVMSLPVectorizer |= Args.hasArg(OPT_disable_llvm_slp_vectorizer);
  if (Args.hasArg(OPT_disable_llvm_verify))
    Opts.Verify = false;

  Opts.EmitStackPromotionChecks |= Args.hasArg(OPT_stack_promotion_checks);
  if (const Arg *A = Args.getLastArg(OPT_stack_promotion_limit)) {
    unsigned limit;
    if (StringRef(A->getValue()).getAsInteger(10, limit)) {
      Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
                     A->getAsString(Args), A->getValue());
      return true;
    }
    Opts.StackPromotionSizeLimit = limit;
  }

  if (Args.hasArg(OPT_autolink_force_load))
    Opts.ForceLoadSymbolName = Args.getLastArgValue(OPT_module_link_name);

  Opts.ModuleName = FrontendOpts.ModuleName;

  if (Args.hasArg(OPT_use_jit))
    Opts.UseJIT = true;
  
  for (const Arg *A : Args.filtered(OPT_verify_type_layout)) {
    Opts.VerifyTypeLayoutNames.push_back(A->getValue());
  }

  for (const Arg *A : Args.filtered(OPT_disable_autolink_framework)) {
    Opts.DisableAutolinkFrameworks.push_back(A->getValue());
  }

  Opts.GenerateProfile |= Args.hasArg(OPT_profile_generate);
  const Arg *ProfileUse = Args.getLastArg(OPT_profile_use);
  Opts.UseProfile = ProfileUse ? ProfileUse->getValue() : "";

  Opts.PrintInlineTree |= Args.hasArg(OPT_print_llvm_inline_tree);
//.........这里部分代码省略.........

ToolChain::InvocationInfo
toolchains::Darwin::constructInvocation(const LinkJobAction &job,
                                        const JobContext &context) const {
  assert(context.Output.getPrimaryOutputType() == types::TY_Image &&
         "Invalid linker output type.");

  const Driver &D = getDriver();
  const llvm::Triple &Triple = getTriple();

  ArgStringList Arguments;
  addPrimaryInputsOfType(Arguments, context.Inputs, types::TY_Object);
  addInputsOfType(Arguments, context.InputActions, types::TY_Object);

  if (context.OI.DebugInfoKind == IRGenDebugInfoKind::Normal) {
    size_t argCount = Arguments.size();
    if (context.OI.CompilerMode == OutputInfo::Mode::SingleCompile)
      addInputsOfType(Arguments, context.Inputs, types::TY_SwiftModuleFile);
    else
      addPrimaryInputsOfType(Arguments, context.Inputs,
                             types::TY_SwiftModuleFile);

    if (Arguments.size() > argCount) {
      assert(argCount + 1 == Arguments.size() &&
             "multiple swiftmodules found for -g");
      Arguments.insert(Arguments.end() - 1, "-add_ast_path");
    }
  }

  switch (job.getKind()) {
  case LinkKind::None:
    llvm_unreachable("invalid link kind");
  case LinkKind::Executable:
    // The default for ld; no extra flags necessary.
    break;
  case LinkKind::DynamicLibrary:
    Arguments.push_back("-dylib");
    break;
  }

  assert(Triple.isOSDarwin());

  // FIXME: If we used Clang as a linker instead of going straight to ld,
  // we wouldn't have to replicate Clang's logic here.
  bool wantsObjCRuntime = false;
  if (Triple.isiOS())
    wantsObjCRuntime = Triple.isOSVersionLT(8);
  else if (Triple.isWatchOS())
    wantsObjCRuntime = Triple.isOSVersionLT(2);
  else if (Triple.isMacOSX())
    wantsObjCRuntime = Triple.isMacOSXVersionLT(10, 10);

  if (context.Args.hasFlag(options::OPT_link_objc_runtime,
                           options::OPT_no_link_objc_runtime,
                           /*default=*/wantsObjCRuntime)) {
    llvm::SmallString<128> ARCLiteLib(D.getSwiftProgramPath());
    llvm::sys::path::remove_filename(ARCLiteLib); // 'swift'
    llvm::sys::path::remove_filename(ARCLiteLib); // 'bin'
    llvm::sys::path::append(ARCLiteLib, "lib", "arc");

    if (!llvm::sys::fs::is_directory(ARCLiteLib)) {
      // If we don't have a 'lib/arc/' directory, find the "arclite" library
      // relative to the Clang in the active Xcode.
      ARCLiteLib.clear();
      if (findXcodeClangPath(ARCLiteLib)) {
        llvm::sys::path::remove_filename(ARCLiteLib); // 'clang'
        llvm::sys::path::remove_filename(ARCLiteLib); // 'bin'
        llvm::sys::path::append(ARCLiteLib, "lib", "arc");
      }
    }

    if (!ARCLiteLib.empty()) {
      llvm::sys::path::append(ARCLiteLib, "libarclite_");
      ARCLiteLib += getPlatformNameForTriple(Triple);
      ARCLiteLib += ".a";

      Arguments.push_back("-force_load");
      Arguments.push_back(context.Args.MakeArgString(ARCLiteLib));

      // Arclite depends on CoreFoundation.
      Arguments.push_back("-framework");
      Arguments.push_back("CoreFoundation");
    } else {
      // FIXME: We should probably diagnose this, but this is not a place where
      // we can emit diagnostics. Silently ignore it for now.
    }
  }

  context.Args.AddAllArgValues(Arguments, options::OPT_Xlinker);
  context.Args.AddAllArgs(Arguments, options::OPT_linker_option_Group);
  context.Args.AddAllArgs(Arguments, options::OPT_F);

  if (context.Args.hasArg(options::OPT_enable_app_extension)) {
    // Keep this string fixed in case the option used by the
    // compiler itself changes.
    Arguments.push_back("-application_extension");
  }

  if (context.Args.hasArg(options::OPT_embed_bitcode,
                          options::OPT_embed_bitcode_marker)) {
    Arguments.push_back("-bitcode_bundle");
//.........这里部分代码省略.........

static bool ParseIRGenArgs(IRGenOptions &Opts, ArgList &Args,
                           DiagnosticEngine &Diags,
                           const FrontendOptions &FrontendOpts,
                           const SILOptions &SILOpts,
                           StringRef SDKPath,
                           StringRef ResourceDir,
                           const llvm::Triple &Triple) {
  using namespace options;

  if (!SILOpts.SILOutputFileNameForDebugging.empty()) {
      Opts.DebugInfoLevel = IRGenDebugInfoLevel::LineTables;
  } else if (const Arg *A = Args.getLastArg(OPT_g_Group)) {
    if (A->getOption().matches(OPT_g))
      Opts.DebugInfoLevel = IRGenDebugInfoLevel::Normal;
    else if (A->getOption().matches(options::OPT_gline_tables_only))
      Opts.DebugInfoLevel = IRGenDebugInfoLevel::LineTables;
    else if (A->getOption().matches(options::OPT_gdwarf_types))
      Opts.DebugInfoLevel = IRGenDebugInfoLevel::DwarfTypes;
    else
      assert(A->getOption().matches(options::OPT_gnone) &&
             "unknown -g<kind> option");

    if (Opts.DebugInfoLevel > IRGenDebugInfoLevel::LineTables) {
      if (Args.hasArg(options::OPT_debug_info_store_invocation)) {
        ArgStringList RenderedArgs;
        for (auto A : Args)
          A->render(Args, RenderedArgs);
        CompilerInvocation::buildDebugFlags(Opts.DebugFlags,
                                            RenderedArgs, SDKPath,
                                            ResourceDir);
      }
      // TODO: Should we support -fdebug-compilation-dir?
      llvm::SmallString<256> cwd;
      llvm::sys::fs::current_path(cwd);
      Opts.DebugCompilationDir = cwd.str();
    }
  }

  if (const Arg *A = Args.getLastArg(options::OPT_debug_info_format)) {
    if (A->containsValue("dwarf"))
      Opts.DebugInfoFormat = IRGenDebugInfoFormat::DWARF;
    else if (A->containsValue("codeview"))
      Opts.DebugInfoFormat = IRGenDebugInfoFormat::CodeView;
    else
      Diags.diagnose(SourceLoc(), diag::error_invalid_arg_value,
                     A->getAsString(Args), A->getValue());
  } else if (Opts.DebugInfoLevel > IRGenDebugInfoLevel::None) {
    // If -g was specified but not -debug-info-format, DWARF is assumed.
    Opts.DebugInfoFormat = IRGenDebugInfoFormat::DWARF;
  }
  if (Args.hasArg(options::OPT_debug_info_format) &&
      !Args.hasArg(options::OPT_g_Group)) {
    const Arg *debugFormatArg = Args.getLastArg(options::OPT_debug_info_format);
    Diags.diagnose(SourceLoc(), diag::error_option_missing_required_argument,
                   debugFormatArg->getAsString(Args), "-g");
  }
  if (Opts.DebugInfoFormat == IRGenDebugInfoFormat::CodeView &&
      (Opts.DebugInfoLevel == IRGenDebugInfoLevel::LineTables ||
       Opts.DebugInfoLevel == IRGenDebugInfoLevel::DwarfTypes)) {
    const Arg *debugFormatArg = Args.getLastArg(options::OPT_debug_info_format);
    Diags.diagnose(SourceLoc(), diag::error_argument_not_allowed_with,
                   debugFormatArg->getAsString(Args),
                   Opts.DebugInfoLevel == IRGenDebugInfoLevel::LineTables
                     ? "-gline-tables-only"
                     : "-gdwarf_types");
  }

  for (auto A : Args.getAllArgValues(options::OPT_debug_prefix_map)) {
    auto SplitMap = StringRef(A).split('=');
    Opts.DebugPrefixMap.addMapping(SplitMap.first, SplitMap.second);
  }

  for (const Arg *A : Args.filtered(OPT_Xcc)) {
    StringRef Opt = A->getValue();
    if (Opt.startswith("-D") || Opt.startswith("-U"))
      Opts.ClangDefines.push_back(Opt);
  }

  for (const Arg *A : Args.filtered(OPT_l, OPT_framework)) {
    LibraryKind Kind;
    if (A->getOption().matches(OPT_l)) {
      Kind = LibraryKind::Library;
    } else if (A->getOption().matches(OPT_framework)) {
      Kind = LibraryKind::Framework;
    } else {
      llvm_unreachable("Unknown LinkLibrary option kind");
    }

    Opts.LinkLibraries.push_back(LinkLibrary(A->getValue(), Kind));
  }

  if (auto valueNames = Args.getLastArg(OPT_disable_llvm_value_names,
                                        OPT_enable_llvm_value_names)) {
    Opts.HasValueNamesSetting = true;
    Opts.ValueNames =
      valueNames->getOption().matches(OPT_enable_llvm_value_names);
  }

  Opts.DisableLLVMOptzns |= Args.hasArg(OPT_disable_llvm_optzns);
  Opts.DisableSwiftSpecificLLVMOptzns |=
//.........这里部分代码省略.........